I'm making this post because it's quite frustrating having no concrete answers on boss health and damage in Dream Dives. The information in here can be verified using something like Wiztree and searching for EnemyData_{NAME} lua scripts. Hopefully it'll get some good visibility. My values don't always agree with the wiki, but I'm inclined to believe they are correct.

I did my best with the formatting, some bosses have unique Rivals modifiers, and speed multipliers. In the case of Rivals bosses, I'll only include the difference modifiers to base, to avoid bloat.

Trap damage has also been changed, but I refuse to touch that. Zagreus doesn't scale. He has 10800 HP at all points, healing back to 0.5x after Death Defiance. I didn't bother with the Warden Shadows unless it was in the same file.

Consider this accurate as of Post Launch Patch 2 - Hotfix 3.

 

Underworld

Guardians (Bosses)

Hecate

Base HP: 6050

Biome 1 HP: 1.25 Damage: 1.25

Biome 2 HP: 2.25 Damage: 1.8

Biome 3 HP: 5.0 Damage: 2.6 Speed: 1.2

Biome 4 HP: 9.0 Damage: 3.45 Speed: 1.4

 

Rivals Hecate

Base HP: 7250

Biome 3 Speed: 1.0

Biome 4 Speed: 1.0

Hecate has the same HP multipliers Rivals v Base, but base Hecate is sped up in later biomes.

 

Scylla & The Sirens

 

Scylla

Base HP: 7750

Biome 1 HP: 0.7 Damage: 1.0

Biome 2 HP: 1.25 Damage: 1.25

Biome 3 HP: 2.75 Damage: 1.9 Speed: 1.1

Biome 4 HP: 5.0 Damage: 2.75 Speed: 1.2

 

Rivals Scylla

Biome 3 Speed: 1.0

Biome 4 Speed: 1.0

 

Roxy (Drummer)

Base HP: 7100

 

Jetty (Keytarist)

Base HP: 5100

Jetty and Roxy share the same modifiers as Scylla (band solidarity yay!).

 

Charybdis - Tentacle (Rivals Scylla Fight)

Base HP: 2800

Biome 1 HP: 0.63 Damage: 1.0

Biome 2 HP: 1.125 Damage: 1.25

Biome 3 HP: 2.475 Damage: 1.9

Biome 4 HP: 4.5 Damage: 2.75

I believe that's per tentacle.

 

Cerberus

Base HP: 21500

Biome 1 HP: 0.4 Damage: 0.5

Biome 2 HP: 0.7 Damage: 0.75

Biome 3 HP: 1.5 Damage: 1.07

Biome 4 HP: 2.75 Damage: 1.34

Rivals Cerberus

Base HP: 31500

Cerberus is a tanky fella. Harder than base game in Dream Dives.

 

Chronos

Phase 1 HP: 20000 Phase 2 HP: 16000

Biome 1 HP: 0.25 Damage: 0.4 Healing (From Tempus enemies): 0.25

Biome 2 HP: 0.37 Damage: 0.65 Healing: 0.37

Biome 3 HP: 0.9 Damage: 0.95 Healing: 0.9

Biome 4 HP: 1.4 Damage: 1.2 Healing: 1.0

 

Rivals Chronos

Phase 1 HP: 22000 Phase 2 HP: 18000 Phase 3 HP: 26000

Biome 1 HP: 0.2 Damage: 0.4 Healing: 0.2

Biome 2 HP: 0.3 Damage: 0.65 Healing: 0.3

Biome 3 HP: 0.72 Damage: 0.95 Healing: 0.72

Biome 4 HP: 1.12 Damage: 1.2 Healing: 1.0

Chronos is more fragile in his Rivals fight? Even accounting for the increased base hp. Don't know how much healing Tempus usually provides.

 

Wardens (Minibosses)

Erebus

Oceanus

 

King Vermin

Base HP: 4600

Uh-Oh.

 

Hellifish

Base HP: 500 Armour: 3000

Hellifish - Shadow

Base HP: 1000 Armour: 5000

This may be incorrect.

 

Fields of Mourning

 

Tartarus

 

Enemies

 

Erebus

Biome 1 HP: 1.25 Damage: 1.4 Money: 1.0

Biome 2 HP: 2.25 Damage: 2.1 Money: 1.15

Biome 3 HP: 5.0 Damage: 3.0 Money: 1.8 Speed: 1.2

Biome 4 HP: 9.0 Damage: 3.0 Money: 2.5 Speed: 1.4

 

Oceanus

Biome 1 HP: 0.7 Damage: 0.84 Money: 0.85

Biome 2 HP: 1.25 Damage: 1.4 Money: 1.0

Biome 3 HP: 2.75 Damage: 2.0 Money: 1.6 Speed: 1.1

Biome 4 HP: 5.0 Damage: 2.0 Money: 2.15 Speed: 1.2

 

Fields of Mourning

Biome 1 HP: 0.37 Damage: 0.7 Money: 0.55

Biome 2 HP: 0.7 Damage: 1.12 Money: 0.65

Biome 3 HP: 1.5 Damage: 1.5 Money: 1.0

Biome 4 HP: 2.75 Damage: 1.5 Money: 1.35

 

Tartarus

Biome 1 HP: 0.2 Damage: 0.63 Money: 0.7 Healing: 0.2

Biome 2 HP: 0.37 Damage: 1.0 Money: 0.7 Healing: 0.37

Biome 3 HP: 0.9 Damage: 1.35 Money: 0.7 Healing: 0.9

Biome 4 HP: 1.5 Damage: 1.35 Money: 0.7 Healing: 1.0

I'm not seeing an ArmourMultiplier or anything, so I assume Armour scales with HP. Biome 4 is very tanky. Check EnemyData.lua for the above values.

 

Surface

Guardians (Bosses)

 

Polyphemus

Base HP: 8400

Biome 1 HP: 0.83 Damage: 0.8

Biome 2 HP: 1.5 Damage: 1.1

Biome 3 HP: 3.3 Damage: 1.75 Speed: 1.2

Biome 4 HP: 6.0 Damage: 2.37 Speed: 1.4

 

Rivals Polyphemus

Base HP: 10200

Biome 3 Speed: 1.0

Biome 4 Speed: 1.0

Medea shares the same modifiers as Rivals Polyphemus. Interestingly, she has a Health modifier, 9999 HP, and cannot die.

 

Eris

Base HP: 16000

Biome 1 HP: 0.41 Damage: 0.6

Biome 2 HP: 0.75 Damage: 0.8

Biome 3 HP: 1.6 Damage: 1.35 Speed: 1.1

Biome 4 HP: 3.0 Damage: 2.0 Speed: 1.2

 

Rivals Eris

Base HP: 18500

Biome 3 Speed: 1.0

Biome 4 Speed: 1.0

Strange that they decided the non-rivals fights should be faster in later areas.

 

Prometheus

Base HP: 33000

Biome 1 HP: 0.26 Damage: 0.3

Biome 2 HP: 0.46 Damage: 0.4

Biome 3 HP: 1.0 Damage: 0.75

Biome 4 HP: 1.8 Damage: 1.0

 

Rivals Prometheus

Base HP: 36000

 

Heracles (Rivals Prometheus Fight)

Base HP: 34000

Biome 1 HP: 0.25

Basically identical to Prometheus. I have no idea why Biome 1 HP is marginally different. Someone probably forgot to tweak both.

 

Typhon

Base HP: 65000 Phase 1 Portion: 12500 Phase 2 Portion: 12500 Phase 3 Portion: 15000 Phase 4 Portion: 25000

Biome 1 HP: 0.2 Damage: 0.25

Biome 2 HP: 0.325 Damage: 0.35

Biome 3 HP: 0.55 Damage: 0.62

Biome 4 HP: 1.0 Damage: 0.87

Bafflingly, the phases are based on portions of MaxHealth, but don't call MaxHealth the variable. Typhon is easier in Biome 4 than a regular run.

 

Rivals Typhon

Phase 5 HP: 10000

Chronos has the same damage modifiers as Typhon in the Rivals fight.

 

Wardens (Minibosses)

City of Ephyra

 

Erymanthian Boar

Base HP: 5000

Erymanthian Boar - Shadow

Base HP: 800

 

Rift of Thessaly

 

Charybdis - Tentacle

Base HP: 2100

Biome 1 HP: 0.49 Damage: 1.0

Biome 2 HP: 0.88 Damage: 1.25

Biome 3 HP: 1.93 Damage: 1.9

Biome 4 HP: 3.5 Damage: 2.75

Odd that Charybdis has different modifiers than Rift, but is makes sense as it is a unique fight. Much more punishing than the rest of the area.

 

The Yargonaut

Base HP: 1000 Armour: 8800

The Yargonaut - Shadow

Base HP: 3000 Armour: 6000

So much armour.

 

Mount Olympus

 

Talos

Base HP: 13300

 

The Summit

 

Twins of Typhon

HP: 9050

I believe that is per twin.

 

Tail of Typhon

Base HP: 25000

Biome 1 HP: 0.15 Damage: 0.2

Biome 2 HP: 0.275 Damage: 0.3

Biome 3 HP: 0.55 Damage: 0.62

Biome 4 HP: 1.0 Damage: 0.87

Similar modifiers to Typhon.

 

Eye of Typhon

Base HP: 25000

Biome 1 HP: 0.15 Damage: 0.2

Biome 2 HP: 0.275 Damage: 0.3

Biome 3 HP: 0.55 Damage: 0.62

Biome 4 HP: 1.0 Damage: 0.87

identical to Tail. Caused me to do a double-take.

 

Spawn of Typhon

Base HP: 25000

Spawn of Typhon - Shadow

Base HP: 2400 Armour: 5800

 

Enemies

 

City of Ephyra

Biome 1 HP: 0.83 Damage: 0.8 Money: 1.0

Biome 2 HP: 1.5 Damage: 1.2 Money: 1.15

Biome 3 HP: 3.3 Damage: 2.0 Money: 1.8 Speed: 1.2

Biome 4 HP: 6.0 Damage: 2.0 Money: 2.5 Speed: 1.4

 

Rift of Thessaly

Biome 1 HP: 0.46 Damage: 0.48 Money: 0.85

Biome 2 HP: 0.83 Damage: 0.8 Money: 1.0

Biome 3 HP: 1.8 Damage: 1.3 Money: 1.6 Speed: 1.1

Biome 4 HP: 3.3 Damage: 1.3 Money: 2.15 Speed: 1.2

 

Mount Olympus

Biome 1 HP: 0.25 Damage: 0.4 Money: 0.45

Biome 2 HP: 0.46 Damage: 0.64 Money: 0.55

Biome 3 HP: 1.0 Damage: 1.0 Money: 0.9

Biome 4 HP: 1.8 Damage: 1.0 Money: 1.25

 

The Summit

Biome 1 HP: 0.125 Damage: 0.4 Money: 1.5

Biome 2 HP: 0.25 Damage: 0.64 Money: 1.5

Biome 3 HP: 0.55 Damage: 1.0 Money: 1.15

Biome 4 HP: 1.0 Damage: 1.0 Money: 1.15

 

Interesting that Summit gives a boost of cash in the early game. Tartarus, on the other hand, receives income nerfs across the board, probably due to the highly valuable extra rooms.

I'm not too confident on the Warden values, as the tags used to define them are inconsistent. The files aren't named as in the game, and I'd need to spend a lot more time to parse them properly.

This is probably quite useful to the speedrunning community, and youtubers like Haelian, Boated, if they don't know this already.

If I messed anything up, I will cry.